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Thermo-Elasto-Hydrodynamic Analysis of a Crankshaft Journal Bearing

[+] Author Affiliations
Filippo M. Lachina, Roberto Rivara

IVECO S.p.A., Torino, Italy

Francesco Cappello

Università degli Studi di Palermo, Palermo, Italy

Emanuele Pisanò, Mario V. Durando

CRF S.C.p.A., Orbassano, TO, Italy

Paper No. ESDA2006-95411, pp. 909-917; 9 pages
doi:10.1115/ESDA2006-95411
From:
  • ASME 8th Biennial Conference on Engineering Systems Design and Analysis
  • Volume 3: Dynamic Systems and Controls, Symposium on Design and Analysis of Advanced Structures, and Tribology
  • Torino, Italy, July 4–7, 2006
  • ISBN: 0-7918-4250-9 | eISBN: 0-7918-3779-3
  • Copyright © 2006 by ASME

abstract

This paper summarizes the essential parts of a numerical analysis activity in which the application of the Thermo-Elasto-Hydro-Dynamic (TEHD) lubrication theory to a crankshaft journal bearing is examined. The study is carried out through numerical computations performed by a commercial flexible-multibody code which simulates the lubricated contact between elastic bodies in large displacement motion. A multibody model has been created and its thermal behaviour has been validated by comparison with experimental temperatures. The validated model is used to perform two comparative analyses between the TEHD modelling and the Elasto-Hydro-Dynamic (EHD) modelling for max torque and max power conditions. A parametric analysis is also performed in which some functional parameters of the bearing (such as journal speed and bearing clearance) are varied and the influence of these variations on reliability (damage parameters) and performances (lost power) of the bearing is monitored.

Copyright © 2006 by ASME

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